3RT2023-1FB44-3MA0

The 3RW4076-6BB45 is the highest current rating in the SIRIUS 3RW40 series. With a rated current of 432A, it can handle a wide voltage range of 400 to 600V AC. The built-in bypass contact reduces heat generation during operation, making it more energy-efficient and stable for long-term operation.

The 3RW4076-6BB44 has a rated current of 432A and is compatible with a voltage range of 200 to 460V AC. It comes with a 230V AC control power supply and screw terminals, features a smooth start-up process, and has a bypass operation mechanism to reduce heat loss.

The 3RW4076-2BB44 and 6BB44 have the same electrical specifications. The difference is that the auxiliary and control circuits use spring terminals instead of screws for fastening. The wires are quickly clamped and not easy to loosen, making them suitable for production line distribution panels that require frequent maintenance.

The 3RW4075-6BB44 has a rated current of 356A, corresponding to a voltage range of 200 to 460V AC and a control power supply of 230V AC. It has a built-in thyristor bypass system and motor overload protection, making it more energy-efficient and safer to operate.

The 3RW4075-6BB35 is designed for 400 to 600V AC high-voltage main circuits, paired with a 115V AC control power supply. It is commonly used in US standard panel wiring and has a rated current of 356A, which can support the smooth start of medium and large three-phase motors.

The 3RW4074-6BB44 has a rated current of 280A and is compatible with 200 to 460V AC and 230V AC control power supplies. It features an S12 chassis with screw terminal wiring, smooth start-up, and bypass power saving and overload protection mechanisms.

The 3RW4074-6BB35 supports high-voltage main circuits from 400 to 600V AC, with a control power supply of 115V AC and a rated current of 280A. It is commonly used in large three-phase motor starting applications in North American standard switchboards.

The 3RW4074-6BB34 main circuit covers 200 to 460V AC, and the control power supply adopts a 115V AC design. It has the same current specification as the 6BB44 version, the difference lies in the selection of control loop voltage.

The 3RW4074-2BB44 and 6BB44 have the same electrical specifications, both rated at 280A. The difference lies in the auxiliary control circuit, which uses spring-clamp terminals for quick and secure wire clamping, making it suitable for production line distribution panels that require frequent maintenance.

3RW4073-6BB45 is the smallest model in this batch with a rated current of 230A, corresponding to a voltage range of 400 to 600V AC, an insulation voltage of 600V, and complies with IEC 60947-4-2 pollution level 3 standard.

The SIRIUS 3RW4073-6BB44 is a simplified soft starter from Siemens that uses voltage ramp control to smoothly start three-phase motors, reducing the impact of starting surge current on the power supply system. It has built-in bypass contacts and overload protection and is suitable for general industrial motor loads such as pumps, fans, conveyors, and compressors.

The 3RW4073-6BB35 belongs to the SIRIUS series of soft starters. It uses thyristor phase control for voltage ramp-up and shutdown, which helps reduce the current surge during motor startup. It has built-in bypass contacts and thermal overload protection, and is suitable for common three-phase induction motor starting control applications in factories.

The Siemens 3RW4073-6BB34 soft starter controls the starting of a three-phase motor using a voltage ramp method, reducing the impact of starting surges on the mechanical and power supply systems. It also has built-in bypass contacts to reduce heat generation during full-speed operation and is equipped with motor overload protection, making it suitable for a variety of industrial automation applications.

The 3RW4073-2BB44 is a larger capacity soft starter model in the SIRIUS series, suitable for three-phase motors with high power requirements. It achieves voltage ramp starting through thyristor phase control and has built-in bypass contacts and overload protection. It is commonly used in large industrial loads such as pumps, fans, and compressors.

The 3RW4056-6BB45 is a Siemens SIRIUS simplified soft starter. It reduces the instantaneous starting current of the motor through voltage ramp control, has built-in bypass contacts to reduce heat generation and energy consumption during full-speed operation, and has motor thermal overload protection. It is suitable for starting control of medium-sized three-phase induction motors.